Silverstone Tek ATX12V/EPS12V 850Watts 80+ Gold PFC ATX 850 Power Supply 100% Modular with 140mm Magnetized Fan Filter ST85F-G Evolution 80 PLUS Gold certification with high efficiency 88%~91% at 20%~100% loading Ultra silent 139mm Air Penetrator fan with fluid dynamic bearing magnetized fan filter included 850W (950W peak power) 24hour fully continuous power output with 40 degree C operating temperature Strict 3% voltage regulation and low ripple & noise Japanese main capacitors Dual EPS 8pin with multiple PCI-E 8pin and PCI-E 6pin connectors support, class-leading single +12V rail with 83A Support ATX 12V 2.3 & EPS 12V